transactional- Time-sensitive, high-priority emails- Password resets, 2FA codes, order confirmations
- Optimized for highest deliverability
- Recommended for mission-critical emails
broadcast- Marketing campaigns and newsletters- Newsletters, promotional emails, announcements
- Optimized for high-volume sending
- Ideal for promotional campaigns
shared(default) - General purpose emails- Notifications, alerts, general correspondence
- Balanced approach for mixed content types
- Good default for most use cases